San Diego (CBS 8) - A San Diego police officer has been placed on administrative leave without pay, while the El Cajon Police Department investigates allegations of sexual assault. A woman says she was raped by the officer and another woman.

A source tells CBS 8 the officer in question is Art Perea. CBS 8 has also learned the alleged victim says it happened at her home in El Cajon.

El Cajon Police Lieutenant Mark Coit told CBS 8, "From what we've learned so far, she was an acquaintance with the suspects." He says the department received a phone call from a hospital last Wednesday, where the alleged victim was being treated after stating she'd been raped. No arrests have been made and no charges have been filed. Coit said, "We're waiting on some test results from the medical examination and that kind of thing, so we're looking for facts."

San Diego Police Chief William Lansdowne told CBS 8, "I need to stress these are allegations only, at this particular point." Still, he has taken swift action. "After discussing the case with him, it was my decision to place the officer on administrative leave without pay and take away his police powers, which includes his badge and his gun," Lansdowne said, adding there will be an internal investigation as well.

Officer Perea was a member of the department's Graffiti Strike Force. He is also a father, stating on a local divorce attorney's website that he was able to gain custody of his son, and was looking forward to moving on with his life.

Now, Perea could need a criminal attorney. "Whether it's a painter, plumber, or police officer, we're going to do the same investigation. We're going to find all the facts and present it," Coit said.